Personal Property Memorandum Requirements in Illinois

At a glance

Illinois uses a fixed incorporation route

Illinois's current wills article contains no special statute for a separate, freely updatable tangible-personal-property list. Illinois instead recognizes the narrower doctrine of incorporation by reference. Under In re Estate of Phelan, all three requirements must coexist:

1. The will must refer to the paper as already existing, reasonably identify it, and show the testator's intent to make it part of the will.
2. The paper must in fact exist when the will is executed.
3. The paper produced must correspond to the will's description and be proved to be the referenced paper.

When those requirements are met, the paper becomes part of the will “as if copied in full.” The paper does not independently have to be a will. Phelan describes incorporation of a paper that “in itself is not a will for lack of execution.” The incorporating will remains subject to § 4-3(a): it must be in writing, signed by the testator or a directed signer, and attested in the testator's presence by at least two credible witnesses.

This is a general extrinsic-document doctrine, not a personal-property- memorandum statute. The authorities state no separate tangible-property definition, excluded-asset list, value ceiling, handwriting condition, signature condition, date condition, or item-and-recipient formula for the incorporated paper. A signature, date, or other feature can still matter when the will uses it to identify the particular paper.

What trips people up

The paper is fixed to the will-execution event. Phelan explains that allowing a future paper would let a testator dispose of property through an instrument not executed under the wills statute. A list written only after execution, or a later casual replacement, therefore does not qualify through the old will.

Section 4-9 also states that an alteration of any part of a will is “of no effect” unless the will is thereafter signed and attested as the article requires. A testator who wants changed terms must use a properly reexecuted will or a later will that identifies the replacement paper, rather than treating the incorporated paper as a freely editable list.

Common questions

Must the separate paper itself be signed, witnessed, handwritten, or dated?

The paper does not have to satisfy § 4-3 as though it were a separate will. Phelan explains that a paper lacking execution as a will may still be incorporated and quotes an Illinois Supreme Court decision allowing a defectively executed, unattested instrument when the will itself was properly executed and contained the required reference. The will's description must still identify the actual paper produced, so a stated date, signature, or other feature can matter in a particular will.

Can the will refer to a list that will be written later?

No. The paper must actually exist when the will is executed. Phelan treats that timing rule as protection against later informal testamentary changes.

What property may the paper address?

Illinois's incorporation doctrine is not limited by a personal-property- memorandum definition or exclusion list. The paper's terms become part of the will if the incorporation requirements are satisfied, but other law may still govern ownership, title, nonprobate transfers, or a particular asset.

What happens if incorporation succeeds or fails?

A qualifying paper becomes part of the will as if its terms had been copied there. Section 4-13 makes an admitted will effective to transfer the real and personal estate bequeathed in it. A paper that fails the incorporation test is not part of the will; the will's other provisions then control, and § 4-14 sends property not bequeathed by the will through intestacy.

Statutes and sources

• 755 ILCS 5/Article IV — complete current wills article; it contains no personal-property-memorandum statute. Illinois General Assembly: https://www.ilga.gov/legislation/ILCS/details?MajorTopic=&Chapter=&ActName=Probate%20Act%20of%201975.&ActID=2104&ChapterID=60&ChapAct=755+ILCS+5%2F&SeqStart=5500000&SeqEnd=7000000&Print=True (accessed 2026-08-11).
• 755 ILCS 5/4-3(a) — the incorporating will's writing, signature, and two-witness attestation requirements. Same official Article IV URL (accessed 2026-08-11).
• 755 ILCS 5/4-7(a) and 4-9 — later-will and alteration rules. Same official Article IV URL (accessed 2026-08-11).
• 755 ILCS 5/4-13 and 4-14 — effect of an admitted will and intestate treatment of property not bequeathed by the will. Same official Article IV URL (accessed 2026-08-11).
• In re Estate of Phelan, 375 Ill. App. 3d 248, 873 N.E.2d 39 (2007) — current statement of the three-part incorporation rule, required existence, and effect as if copied into the will. Official Illinois State Library opinion PDF: https://oa.isla.libnova.com/file/536055/content (accessed 2026-08-24).